Julie, nobody "has" a "particular family" here. We all share one single tree and, therefore, we all bear responsibility for the accuracy and thoroughness of all profiles. The pre-1700 certification process that you completed includes very specific discussion of why other family trees are not acceptable sources for WikiTree pre-1700 profiles.
I see that you added Susanna's profile yesterday, using those two unsourced family trees as the only sources and then you asked this question requesting advice as to whether you should do that after having done it. While looking, I also saw that you added several members of Susanna's family yesterday. Although the other profiles are not pre-1700, the family members you added include one child, one grandchild, and one great-grandchild, all with only the same two family trees for sources. You also added the great-grandchild's husband - the only other family member for all these profiles - again, with the same two family trees for sources. It is his child (with an unknown mother), whose profile has been here for two years, who has valid sources and other relatives.
It's really great to be able to extend our tree farther back, but when you find information in a family tree that identifies a parent or spouse for a profile, it is time to do the research to find records documenting the existence of the person and the relationship to the profile, before adding an effectively unsourced (even though there is something put in the sources section) profile to our tree.
If you can't find adequate sources then you can always ask for help here and harness the collaborative power of WikiTree - many members will try to find the information you need in order to add the new profile.